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Dfalz01's avatar
Dfalz01
Copper Contributor
Feb 17, 2026

SSL_ERR_CREDENTIAL_PROMPT_FAILED_WITH_CO_E_SERVER_EXEC_FAILURE (15623)

Need help with the following issues on AVD. What could be causing these issues?? My users seem to get the error when they try to sign on. 

 

1 Reply

  • Kidd_Ip's avatar
    Kidd_Ip
    MVP
    Feb 18, 2026

    The error SSL_ERR_CREDENTIAL_PROMPT_FAILED_WITH_CO_E_SERVER_EXEC_FAILURE (15623) encountered in Azure Virtual Desktop (AVD) is generally indicative of a failure in the credential prompt process during user authentication. It may be a chance that the problem was introduced by certain Windows security updates, which interfere with the Remote Desktop credential handling mechanism.

     

    https://learn.microsoft.com/en-us/answers/questions/5677074/login-issue-in-avd

     

    https://simplysecuregroup.com/microsoft-january-2026-security-update-causes-credential-prompt-failures-in-remote-desktop-connections/